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Measurement / control system

Flow range
(intermediate ranges available)

min. 1…50 g/h
max. 20…2000 g/h

Mass flow accuracy

Liquid: ± 0,2% of rate;
Gas: ± 0,5% of rate

Turndown

up to 1:100

Repeatability

±0,05% of rate ± ½(ZS* x 100/actual flow)%

Zero Stability (ZS)*

< ±0,2 g/h

Response time, meter (t98%)

≤ 200 msec

Operating temperature

0…70°C;
for ATEX Cat.3, Zone 2 max. 50°C

Temperature effect**

on zero: < 0,02 g/h/°C;
on span: < 0,001% Rd/°C;
self heating (at zero flow): ≤ 15°C

Temperature accuracy

±0,5°C

Density accuracy

< ±5 kg/m3

Mounting***

Any position, attitude sensitivity negligible

Leak integrity

Outboard < 2 x 10-9 mbar l/s He

Warm-up time

> 30 min. for optimum accuracy